Buggy code:
public class ResolvedMemberImpl extends MemberImpl implements AnnotatedElement , IHasPosition , ResolvedMember , TypeVariableDeclaringElement { public String [ ] parameterNames = null ; protected UnresolvedType [ ] checkedExceptions = UnresolvedType . NONE ; protected ResolvedMember backingGenericMember = null ; protected Set annotationTypes = null ; private boolean isAnnotatedElsewhere = false ; private boolean isAjSynthetic = true ; private UnresolvedType [ ] typeVariables ; protected int start ; protected int end ; protected ISourceContext sourceContext = null ; public ResolvedMemberImpl ( Kind kind , UnresolvedType declaringType , int modifiers , UnresolvedType returnType , String name , UnresolvedType [ ] parameterTypes ) { } public ResolvedMemberImpl ( Kind kind , UnresolvedType declaringType , int modifiers , UnresolvedType returnType , String name , UnresolvedType [ ] parameterTypes , UnresolvedType [ ] checkedExceptions ) { } public ResolvedMemberImpl ( Kind kind , UnresolvedType declaringType , int modifiers , UnresolvedType returnType , String name , UnresolvedType [ ] parameterTypes , UnresolvedType [ ] checkedExceptions , ResolvedMember backingGenericMember ) { } public ResolvedMemberImpl ( Kind kind , UnresolvedType declaringType , int modifiers , String name , String signature ) { } public static JoinPointSignature [ ] getJoinPointSignatures ( Member joinPointSignature , World inAWorld ) { } private static boolean shouldWalkUpHierarchyFor ( Member aMember ) { } private static void accumulateTypesInBetween ( ResolvedType subType , ResolvedType superType , List types ) { } private static void accumulateMembersMatching ( ResolvedMemberImpl memberToMatch , Iterator typesToLookIn , List typesAlreadyVisited , List foundMembers ) { } public final int getModifiers ( World world ) { } public final int getModifiers ( ) { } public final UnresolvedType [ ] getExceptions ( World world ) { } public UnresolvedType [ ] getExceptions ( ) { } public ShadowMunger getAssociatedShadowMunger ( ) { } public boolean isAjSynthetic ( ) { } public boolean hasAnnotations ( ) { <START_BUG> return ( annotationTypes ) == null ; <END_BUG> } public boolean hasAnnotation ( UnresolvedType ofType ) { } public ResolvedType [ ] getAnnotationTypes ( ) { } public void setAnnotationTypes ( UnresolvedType [ ] annotationtypes ) { } public void addAnnotation ( AnnotationX annotation ) { } public boolean isBridgeMethod ( ) { } public boolean isVarargsMethod ( ) { } public boolean isSynthetic ( ) { } public void write ( DataOutputStream s ) throws IOException { } public static void writeArray ( ResolvedMember [ ] members , DataOutputStream s ) throws IOException { } public static ResolvedMemberImpl readResolvedMember ( VersionedDataInputStream s , ISourceContext sourceContext ) throws IOException { } public static ResolvedMember [ ] readResolvedMemberArray ( VersionedDataInputStream s , ISourceContext context ) throws IOException { } public ResolvedMember resolve ( World world ) { } public ISourceContext getSourceContext ( World world ) { } public final String [ ] getParameterNames ( ) { } public final String [ ] getParameterNames ( World world ) { } public EffectiveSignatureAttribute getEffectiveSignature ( ) { } public ISourceLocation getSourceLocation ( ) { } public int getEnd ( ) { } public ISourceContext getSourceContext ( ) { } public int getStart ( ) { } public void setPosition ( int sourceStart , int sourceEnd ) { } public void setSourceContext ( ISourceContext sourceContext ) { } public boolean isAbstract ( ) { } public boolean isPublic ( ) { } public boolean isProtected ( ) { } public boolean isNative ( ) { } public boolean isDefault ( ) { } public boolean isVisible ( ResolvedType fromType ) { } public void setCheckedExceptions ( UnresolvedType [ ] checkedExceptions ) { } public void setAnnotatedElsewhere ( boolean b ) { } public boolean isAnnotatedElsewhere ( ) { } public UnresolvedType getGenericReturnType ( ) { } public UnresolvedType [ ] getGenericParameterTypes ( ) { } public ResolvedMemberImpl parameterizedWith ( UnresolvedType [ ] typeParameters , ResolvedType newDeclaringType , boolean isParameterized ) { } public void setTypeVariables ( UnresolvedType [ ] types ) { } public UnresolvedType [ ] getTypeVariables ( ) { } private UnresolvedType parameterize ( UnresolvedType aType , Map typeVariableMap , boolean inParameterizedType ) { } public ResolvedMember getErasure ( ) { } private ResolvedMember myErasure = null ; private boolean calculatedMyErasure = false ; public void resetName ( String newName ) { } public void resetKind ( Kind newKind ) { } public void resetModifiers ( int newModifiers ) { } public void resetReturnTypeToObjectArray ( ) { } private JoinPointSignature withSubstituteDeclaringType ( ResolvedType newDeclaringType ) { } public boolean matches ( ResolvedMember aCandidateMatch ) { } private String myParameterSignatureWithBoundsRemoved = null ; private String myParameterSignatureErasure = null ; private String getParameterSigWithBoundsRemoved ( ) { } private String getParameterSigErasure ( ) { } private void appendSigWithTypeVarBoundsRemoved ( UnresolvedType aType , StringBuffer toBuffer ) { } public String toGenericString ( ) { } }

Fix:
return ( annotationTypes ) != null ;